William fbemjh



(No Model.) 2 Sheets-Sheet 1.

W. FRENCH. Kiln for Burning Pottery Ware and other Articles.

No. 233,230. Patented Oct. 12,1880.

H} N I PETERS, PHOTO-LITHOGRAPHER. WASHINGTON D c UNITED STATES ATENTErica,

WILLIAM FRENCH, OF NEW YORK, N. Y.

KlLN FOR BURNING POTTERY-WARE AND OTHER ARTICLES.

SPECIFICATION forming part of Letters Patent No. 233,230, dated October12, 1880. Application filed March 4, 1880. (No model.)

To all whom it may concern:

Be it known that I, WLLLIAM FRENCH, a subject of the Queen of GreatBritain, residing at New York, in the county and State of New York, haveinvented new and useful Improvements in Kilns for Burning Pottery-Wareand otherArticles, of which the following is a specification.

This invention relates to a kiln which is composed of a circularburning-chamber, a series of fire-places arranged on the periphery of acircle below the bottom of the burning-chamber, a central flue openinginto the burningchamber, a series of radiating-fines extending from thefire-places to the central flue, a circular flue situated beneath thebottom of the burning-chamber, a series of vertical fines extending fromthe burning-chamber to the circular flue, and a smoke-flue leading fromthe circular flue to the chimney, so that the heated gases which risefrom the tires in the fire-places pass through the central flue up intothe burning-chamber, and after having circulated through saidburning-chamber they escape through the central flue to the chimney, andthereby the articles in the burning-chamber are heated uniformly andwith great economy in fuel.

With the parts above stated are further combined a series of fire-bags,one for each fireplace, and communicating with the same through verticallines extending up close to the circular wall of the fire-chamber, andan opening in the top of said fire-chamber, which can be opened orclosed by a damper for the purpose of regulating the heat in theburningchamber.

This invention is illustrated in the accompanying drawings, in which-Figure 1 represents a vertical central section. Fig. 2 is a horizontalsection in the plane a: .r, Fig. 1. Fig. 3 is a similar section in theplane 3 y, Fig. 1. Fig. 4 is a similar section in the plane 2 z, Fig. 1.

Similar letters indicate corresponding parts.-

In the example shown in the drawings, the letter A designates theburning-chamber of my kiln, which is built, by preference, in a circularform, but which may be polygonal or of any other form suitable for thepurpose. A door, B, gives access to the burning-chamber, and below thebottom of said burning-chamber are a series of fire-places, G, whichcommunicate, by radiating-flues a, with a central line, I), leading upthrough the bottom of the burningchamber, and below the radiating-finesa is a circular flue, c, Fig. 4., which communicates with theburning-chamber through a series of vertical fines, d, extending upbetween the radiating-fines, as shown in Figs. 2 and 3, and from saidcircular flue 0 extends a smoke-flue, e, to the chimney D.

From the bottom of the burning-chamber rise a series of fire-bags, E,one over each of the fire-places O, and situated close to the inner wallof the burning-chamber, as shown in Figs. 1 and 2 of the drawings. Fromeach fireplace rises a vertical flue, f, into the corresponding fire-bagE, and in the top of the burning-chamber is an opening, 9, which can beclosed or opened by means of a damper, h, Fig. 1. After the articles tobe burned have been placed into the burning-chamber A the door B isfirmly closed and fires are started in the several fire-places (l. Theheated gases from the fires pass up into the burning-chambers, partlythrough the central flue, b, and partly through the fire-bags E, andafter striking the top of the burning-chamber they are turned downward,and escape through the vertical fiues cl, circular flue c, andsmoke-flue 0. By these means the heat is uniformly distributedthroughout the burning-chamber, and the articles contained therein areburned uni- .formly, with great economy in fuel. It must be remarkedthat in order to accomplish this purpose the fire-bags E and flues fmight be closed or omitted, since a uniform distribution otheat in theburning-chamber will be effected by the cooperation of theradiating-fines a, central flue, b, vertical flues d, circular flue c,and smoke-flue e.

If the heat in the burning-chamber rises beyond the desired point, Iopen the damper h, and

the heated gases pass straight up from the fire 5 10 ing-chamher throughvertical flues intermediate of the radiating-fines, substantially as andfor the purpose specified.

In testimony whereof I have hereunto set my hand and seal in thepresence of two subscribing witnesses.

WILLIAM FRENCH.

Witnesses HUGH MITCHELL, E. F. KASTENHUBER.

